1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    *
5    *
6    *
7    * The contents of this file are subject to the terms of the Liferay Enterprise
8    * Subscription License ("License"). You may not use this file except in
9    * compliance with the License. You can obtain a copy of the License by
10   * contacting Liferay, Inc. See the License for the specific language governing
11   * permissions and limitations under the License, including but not limited to
12   * distribution rights of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.portal.velocity;
24  
25  import com.liferay.portal.kernel.log.Log;
26  import com.liferay.portal.kernel.log.LogFactoryUtil;
27  import com.liferay.portal.theme.ThemeLoader;
28  import com.liferay.portal.theme.ThemeLoaderFactory;
29  
30  import java.io.FileInputStream;
31  import java.io.FileNotFoundException;
32  import java.io.InputStream;
33  
34  import org.apache.velocity.exception.ResourceNotFoundException;
35  
36  /**
37   * <a href="ThemeLoaderVelocityResourceListener.java.html"><b><i>View Source</i>
38   * </b></a>
39   *
40   * @author Brian Wing Shun Chan
41   */
42  public class ThemeLoaderVelocityResourceListener
43      extends VelocityResourceListener {
44  
45      public InputStream getResourceStream(String source)
46          throws ResourceNotFoundException {
47  
48          InputStream is = null;
49  
50          try {
51              int pos = source.indexOf(THEME_LOADER_SEPARATOR);
52  
53              if (pos != -1) {
54                  String ctxName = source.substring(0, pos);
55  
56                  ThemeLoader themeLoader = ThemeLoaderFactory.getThemeLoader(
57                      ctxName);
58  
59                  if (themeLoader != null) {
60                      String name =
61                          source.substring(pos + THEME_LOADER_SEPARATOR.length());
62  
63                      String themesPath = themeLoader.getThemesPath();
64  
65                      if (name.startsWith(themesPath)) {
66                          name = name.substring(
67                              themesPath.length(), name.length());
68                      }
69  
70                      if (_log.isDebugEnabled()) {
71                          _log.debug(
72                              name + " is associated with the theme loader " +
73                                  ctxName + " " + themeLoader);
74                      }
75  
76                      is = new FileInputStream(
77                          themeLoader.getFileStorage().getPath() + name);
78                  }
79                  else {
80                      _log.error(
81                          source + " is not valid because " + ctxName +
82                              " does not map to a theme loader");
83                  }
84              }
85          }
86          catch (FileNotFoundException fnfe) {
87              throw new ResourceNotFoundException(source);
88          }
89  
90          return is;
91      }
92  
93      private static Log _log =
94          LogFactoryUtil.getLog(ThemeLoaderVelocityResourceListener.class);
95  
96  }